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Hi, We woocommerce 2.3.10 and when we want to upload your sample.csv it shows error:

Warning: checkdate() expects parameter 1 to be long, string given in /home/site/domains/domain.com/public_html/wp-includes/functions.php on line 4598
{“currentrow”:2,”blocksize”:”1″,”rows”:”4″,”action”:”run_import”,”batch_filename”:”\/home\/site\/domains\/domain.com\/public_html\/wp-content\/uploads\/sites\/4\/csvimport\/example.csv”,”batch”:”c830d4af46″,”log”:[“–> row:2 \/ 4″,”ID :sku-1 not found!”,”post status changed from yes to publish”,”ping status changed from notify to ping”,”menu order changed from taxable to 0″,”stock status changed from to instock”,”visibility changed from to visible”,”backorders changed from to no”,”featured changed from to no”,”manage_stock changed from to no”,”Import failed, could not save product body”],”done”:0,”memory”:29.65}

Skipping the first row

–> row:1 / 4

Starting